One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,12)(5,6)(7,10)(8,13)(11,14)(15,16)(17,18,23,26)(19,24,21,22)(20,25,28,32)(27,31,30,29)(33,34,39,41)(35,40,37,43)(36,42,47,46)(38,45,48,44)(2,6)(7,9)(8,12)(14,15)(17,19,23,21)(18,24,26,22)(20,27,28,30)(25,31,32,29)(33,35)(34,40)(36,45)(37,39)(38,46)(41,43)(42,48)(44,47)(2,6)(3,10)(4,13)(14,15)(19,21)(20,28)(22,24)(25,32)(34,41)(35,37)(36,47)(38,48) involution — undirected(1,3)(2,7)(4,11)(5,10)(6,9)(8,14)(12,15)(13,16)(17,20)(18,25)(19,27)(21,30)(22,29)(23,28)(24,31)(26,32)(33,36,39,47)(34,42,41,46)(35,45,37,44)(38,40,48,43)(1,2)(3,9)(4,8)(5,6)(7,10)(11,15)(12,13)(14,16)(17,21,23,19)(18,22,26,24)(20,27,28,30)(25,31,32,29)(33,37,39,35)(34,43,41,40)(36,45,47,44)(38,42,48,46)(1,4)(2,8)(3,11)(5,13)(6,12)(7,14)(9,15)(10,16)(17,22)(18,19)(20,29)(21,26)(23,24)(25,27)(28,31)(30,32)(33,38,39,48)(34,44,41,45)(35,46,37,42)(36,40,47,43)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.